I would like to thank everyone who tried to help me, although to no avail. I was completely shut down from the laptop, with no tools whatsoever and links to external software did not help because all I had was my smartphone and no one around with a pc to help me. I will now create a rescue usb disk.
I got to enter windows... In the top left corner of the screen there is a specific choice in a little icon named "RU". The first time I clicked on it, it showed me 2 choices "RU" and "CWI", which actually stands for "ENG", but in russian. So, "try and error" did the trick...
Again, thank you all, problem solved!!!